Synthesis and characterization of SiO2/GO/Al2O3 nanocomposite adsorbent for the uptake of ciprofloxacin: isothermal and reusability studies

IF 2.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2025-01-07 DOI:10.1007/s13738-024-03158-9

Prerna Higgins, Rajeev Kumar, Shaziya H. Siddiqui

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Abstract

Silicon dioxide/graphene oxide/aluminum oxide (SiO₂/GO/Al₂O₃) nanocomposite was prepared for the ciprofloxacin (CPF) drug adsorption. The characterization techniques involving field-emission-scanning-electron-microscopy (FE-SEM) determined the topography of the nanocomposite and high resolution transmission electron microscopy (HR-TEM) determined the particle size for SiO₂/GO/Al₂O₃. The EDX confirmed the elemental composition of the materials incorporated, while the X-RD analysis inferred the crystalline nature of SiO₂/GO/Al₂O₃. The FT-IR analysis showcased the role of the capping groups involved. The present study focuses on the adsorption of ciprofloxacin (CPF) drug onto SiO₂/GO/Al₂O₃ regarding kinetics, isotherm, thermodynamics studies, and factors, such as solution pH, temperature, concentration, and time. The outcome showed that the highest adsorption of CPF was observed onto the SiO₂/GO/Al₂O₃ composite at pH 6.0. Similarly, the utmost adsorptive capacity of 499.44 mg g⁻¹ was achieved in 180 min and 500 mgL⁻¹ CPF solution concentration. The CPF uptake on SiO₂/GO/Al₂O₃ was in coordination with the pseudo-second-order equation and Langmuir isotherm, respectively. The thermodynamic parameters ciphered that the uptake of the CPF drug was spontaneous. The drug was easily desorbed using 0.1 M (aq) ethanol solution for six adsorption–desorption cycles.

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用于吸附环丙沙星的SiO2/GO/Al2O3纳米复合吸附剂的合成与表征：等温和可重复使用性研究

制备了二氧化硅/氧化石墨烯/氧化铝（SiO2/GO/Al2O3）纳米复合材料对环丙沙星（CPF）药物的吸附。表征技术包括场发射扫描电子显微镜（FE-SEM）确定纳米复合材料的形貌，高分辨率透射电子显微镜（HR-TEM）确定SiO2/GO/Al2O3的粒度。EDX证实了所加入材料的元素组成，而X-RD分析推断了SiO2/GO/Al2O3的结晶性质。FT-IR分析显示了所涉及的封顶基团的作用。本文研究了环丙沙星（CPF）药物在SiO2/GO/Al2O3表面的吸附动力学、等温线、热力学以及溶液pH、温度、浓度和时间等因素。结果表明，当pH为6.0时，CPF在SiO2/GO/Al2O3复合材料上的吸附量最高。同样，在180 min和500 mgL−1 CPF溶液浓度下，CPF的最大吸附量为499.44 mg g−1。CPF在SiO2/GO/Al2O3上的吸附分别符合拟二阶方程和Langmuir等温线。热力学参数表明CPF药物的摄取是自发的。用0.1 M （aq）的乙醇溶液进行6次吸附-解吸。

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来源期刊

Journal of the Iranian Chemical Society 化学-化学综合

CiteScore

4.40

自引率

8.30%

发文量

230

审稿时长

5.6 months

期刊介绍： JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.